Conveying apparatus for drying-machines.



No. 877,801. PATENTED JAN, 28, 190m A W. M. SCHWARTZ & W. D. PALEN. CONVEYING APPARATUS FOR DRYING MACHINES.

APPLICATION FILED SEPT. 19. 1907.

0000000Q V 0000000 0000000 0000 Q 000000 00000 000000 000000 000000 O0 0000 000000 000000 000000 ooooo Wm 000000 0600 000000 0 0 000000 13 I -"7 v 00 UNITED STATES, PATENT OFFICE.

WALTER. M. SCHWARTZ AND WILLIAM D. PALEN, OF PHILADELPHIA, PENNSYLVANIA,

ASSIGNORS TO THE PHILADELPHIA TEXTILE MACHINERY COMPANY. OF PHILA-. DELPHIA, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

CONVEYING APPARATUS FOR DRYING-MACHINES.

To (111 whom it may concern:

Be it known thatwe, WALTER M. SCHWARTZ and 'WILLIAM D. PALEN, citizens of the United States, residing in Philadel hia, Pennsylvania, have invented certain mprovements in Conveying Apparatus for Drying-Machines, of which the following is a specification.

Our invention relates to certain improvements on conveying apparatus for drying machines, and especially for machines for a drying. veneers.

The object of our invention is-to so construct the endless chain conveyers for carrying the material that the cross-bars will be suitably braced in order to remain a given distance apart and to resist the tendency of the veneer orother material being driedto bend the bars when drying. vThese objects we attain in the following manner, reference being had to 'the accompanying drawing in which:

Figure I is a.transverse sectional view of a veneer drying machine illustrating our invention. Fig. 2 is a plan view of. a portion of the endless chain conveyer illustrated in Fig. 1; Fig. 3 is. a transverse sectional view on the'line'33 Fig. 2; Fig. 4is asectional viewon the line 4-4,"Fig. 2; Fig. 5 is a section on the line 55 Fig. 4, showing a part of one ofthe cross-bars in section; and Figs.

. 6 and 7 are views showing modificationsxof applied to machines for drying other ma-.

the form of cross-bar.

Inillustrating our invention, we have Sim-- ply shown a transverse sectional View through the veneer drying machine, as the present invention relates to the construction of the endIess chain'conveyer and a sectional view is sufficient to illustrate the a plication of our invention to a dryingv mac 'ne.

While we have shown the invention aplied to a veneer dryingma'c hine, it will e understoodthat-the invention can readily be terial suchas paper pulp, binder board, and in fact any material which must be held flat during .the drying process. I

. A4 is a casing containingthe drying cham ber B and the air heating chambers CC. In the present. instance there is a heating chamber at each side of the drying chamber. c are steam pipkes for heating the air as it passes'through ,t-e chambers C. I

i c is a circulating fan mounted'on a shaft E driven' by any suitable means and there may Specification of Letters Patent. Application filed September 19. 1907. Serial No.,393.591.

- the bars in their endeavor to warp.

Patented Jan. 28, 1908.

the machine. v I

' In the present nstance, we have shown five endless chain conveyors '1), one mounted adapted to tracks a'longitudinallysecured to the sidewalls of the drying chamber B1 In the present instance the upper run of each chain supports the lower run of the chain above it so that 'the distancebetween the lower run of oneschain and the upper run of the other will .be always the same, but in some instances the lower run of the chains may travel on independent tracks if desired.

The type of apparatus in which we have. illustrated our invention is clearly shown in the application filed by Frederick Kukkuck September 13, 1906, for-improvements in feeding mechanism for drying machines, Serial No. 334,448. 7

Each endless chain is made up of a series of links (1 connected by ivots at d and the abutting surfaces of the-iinks are fiat so that the links on the lower'run of one chain will rest upon those of the'upper run of another vchain.

Mounted on the pivot pins of each chain are rollers d? which are so proportioned asto rest upon the tracks a so as to materially reducethe friction. Each conveyer consists of two chains one on each side of the drying compartment as illustrated in Figs. 1 and 2 connected together at short intervals by transverse members i, consisting in'the present instance of tubular bars which rest in bosses d projecting from the links of the chain and are of such diameter as to leave a s acea: of a sufiicient height to accommodate the veneer or other material to be dried, allowing it freedom to expand and contract but preventing it warping.

Veneer drying machines are usually of considerable width and it is difficult to maintain the cross bars the same distance apart throughoutthe entire width of the machine when the veneers are drying, .as heavy veneers particularly will in manycases bend overcome this tendency by making each of the cross-bars'in the form of a girder, trussmaterial is conveyed longitudinally through above another, and these conveyers are ing it s'o' asito =iresisti the tendency of the.

veneer to..,press' them apart' and thus the veneerv is'held so" that it cannot warp, and, furthermore, ,weare enabled by our inven tion to maintain the cross barsalways the. same distance 9. art.

There may be many diflerentways constructing the 'conveyer 1 and in. Figs. 2, 3, 4 and 5 we have sho'wnone' method which we prefer to use.

n is a rod which is adapted to a notch i" in each end of the tubular cross bar 'i as indicated in Fig. 5, and the end a of this rod is theentire conveyer as well as each cross bar is firmly braced so that when the *tWOj chains come together as in Fig. .3 thespace m between the cross-bars of the two chains will be the same throughout the width of the conveyer.

In some instances-the cross-bar and the brace may be made in one piece as shown in Fig. 6, which'illustrates a metal sheet bent up in cruciform shape in cross section, thus forming a cross-bar i which is attached'to the side chains In Fig. 7 isishown the cross bar 1' made in one piece with the truss member enlarged at both inclusive.

the bearing. point' and having a suflicient web to brace'it throughout its entire length. 35

Other forms .of braces can be used in carrymg out our mvention, although We prefer the constructionillustrated in Figs. 2 to 5,

1'. An endless chain conveyer consisting of side members connected together at intervals by truss members, substantially as described.

2. In a conveying apparatus, the combina- 111011 of two endless conveyers, one mounted above theother and each consisting of side members and trussed cross members, substantially as-described. 1

3. The combination in conveying apparatus for drying machine, of two endless belt conveyers, one mounted above the other, each conveyer having a chain atfeach side connected by trussed cross members spaced apart, 'the cross members bf one chain being directly above ,the cross members of the other chain on' the carrying run, substan tially as described. v

4. The combination in a convey'er,-of two longitudinal chains, transverse members con-- necting' the chains together at intervals, with braces'at the back of eachtransverse member extending from one. side of the conveyer to the other, substantially as described.

5. The combination in a conveying appa- I .ratus for drying machines, of vtwo or more endlessbelt' conveyers, one mountedv above another, each oonveyer'having side chains and trussed' cross members, the trusses being so arranged as -'to resist-the outward pressure substantially as described.

6. The combination in a conveymgfapparatusfor drying machines, of an endless con- 0f the material carried betweenjthe belts,

veyerconsisting of two side chains connected together by a SGIIGS of transverse members, 7 said transverse members being tubular,- and a braceconsisting of a. rod, attached. to the tubular member at, each end'and struts.

mounted between the transverse"member and the rod so as to stiffen the. transverse,

member, substantially as described' 7. The combinationln a conveying" a pa.- ratus for drying machines, of an en less tconveycr consisting of two-side. chains, .a

tubular transverse member extendmgfroin one chain to the other, said-trans'verse'mem ber having an opening near each end, a rod running parallel with the transverse member hooked at each end and adaptedtotheopeningsin the transverse memberfand a strut member extending from the transverse member to the rod, substantially as described.

8-. The combination in a conveying appa1 ratus' for drying machines, of an endless chain conveyer consisting. of two side chains formed of links pivotally connected together bybQsses on each link between the pivots; i.

tubular transverse members mounted in the bosses and extending from one si(le'of-the--- 'convey'er to the other, the said tubular cross member having holes neareach end, a brace. rod extending parallel withthe transversev member, the ends of the rods extending through the holes and bent to form hooks, and strut members extending from the transverse anember to the brace rod, sub.- stantially as described.

In testimonywhereof, we have signed our names to this spec1ficat1on,;1n the presence of two subscribing witnesses.

WALTER M. SCHWARTZ.

WILLIAM ID. PALENl j Witnesses:

WM. E. SHUPE, WM. A. BARR. 

